Ionic solid structures

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N X P F K H J Q H G I M F V P J Q O N O C
P O W K X R D X C C D C M M V V R X Q R J
T H E W U R T Z I T E S T R U C T U R E H
W D I E W K D X Q N J N A E C B E C T W F
R P H A U B Q T Y X U I E R R N S Y H N O
U V I L L S Y G U U B M F U K R P A U G M
H H X S L M U K O L R A J T D N E M A W U
R E X T W N V G V N L X E C E N G I Y G N
H I J B C A Q B O R T B T U O G N D O N U
H V G L D S K Y V W D L I R K T X J A G F
W A T B I W Y R C A M I K T V M C I U D K
S W P N A Q A S T D A K S S C D S A O C Y
B J F Q B H W J P S H B V E Q L S F X C T
M W U V C G Y H L B M J O L I L A Y D K I
T L W I K X E E F O J E R I M F Y X A D D
A F W J V A W J I V E F E T S K N H W V X
L R F C C I X X Q T D U P U S D X G E F L
G P J D P Q A E Y H H I I R H I D E O U E
E W W R O C K S A L T S T R U C T U R E F
T G L H K T N J D E Q U J E U J S W T H H
O G K B J J O Q M Y F K B Q F K D M G S O

Clues

  • CaTiO3 (AMO3). A2+/M4+ or A3+/M3+. ccp of Ca2+ and O2-. Ti4+ in 1/4 oct. holes. Ca2+ at centre, Ti4+ at 8 corners, O2- at 12 edges. CoNos- Ti=6, Ca=12, O=6 (10)
  • ccp anions. Cations in octahedral holes. CoNos = 6. Alkali/silver halides (except CsX) (4, 4, 9)
  • e.g. TiO2. Unit cell not cubic (1 length longer than other 2). CoNos- Ti = 6, O = 3 (use as self cleaning glass coating) (6, 9)
  • hcp version on sphalerite (3, 8, 9)

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